Improvement in ibutton-hole-stitohing machine



n.14. PEABODY.` Y Button Hole Stitching Machine.

@einen gisten @anni @Hirn Leerdam No. 78,821, datum 9,1868.

IMPROVEMENT INfBUrroN-rtoLsesTIrcnINe MACHINE."

an .same een .anna eine aan sa naar Ane nannte- To ALL WHoM IT MAY oo'NcnRN:

Be itpknown that I, RJJFUS PEABODY, of Chelsea, in the county of Suolk, and Commonwealth of Massachusetts,.hav invented'a'ncw and useful Improvement in Button-Hole-Stitching Machines applicable to the machines manufactured by the Union Button-Hole and Embroidery-Machine Company, of Boston, in said Massachusetts; and I do hereby declare that the following is a "full, clear, and exact.description'thereof, which will enable others to make' and use my invention, reference being had to the 'accompanying drawings, and letters of reference m'arked thereon, which forni a part of this specification. i improvement is upon what is called theelamp, used in said machinesfor holding, spreading, moving, and guiding Vthe button-hole under the' needlein the'process of stitching, and consists in a newmode of spreading the jaws of said clamp. l

Figure 1 of said drawings represents la top view of the clamp with the presser-cam, Figure 2, and guide- 'pin, Figure 3, removed. v 'l Y When the garment or material containing the button-hole to bestitched is placed 'properly in the clamp, the upper jaws, a a,of'the clamp are pressed down upon lthe lower jaws, b,'said garment or material being thus held firmly between saidf'up'per and lower jaws, while the button-hole to be stitched lies centrally 'along the space o, parallel to and between the inner edges 4'of laid jaws. Before proceeding'to stitch the same, the jaws of the clamp are spread apart Iaterally,'which also spreads or separatosthe edges of the button-hole for the purpose of 'ziilbtvi'ngii'e neediethayefreepassageY 'thronghisn-id-holc in stitching over the edges thereof. v

The spreading of said jawshas hitherto beenaccomplished by means of a lever, with a cam attached, turning between the inner edges of said jaws on the hub cl. The ferm and position of'said lever, ashitherto used, are

A,indicated on.the d rawing by red-dotted lines, and the form of the spreader-cam is shown by black dotted lines around said hub d. The red dotted lines indicate the position ofthe lever when the jaws of the clamp are not spread .ap art.

In spreading said jaws, the lever is swung around to' the right, across the path of the needle, to a position opposite that indicated on therightof tho clamp, and `is held in this latter position by the friction onvits cam.

There are serious objections to a spreader-lever applied and operating inthe manner described. By being so applied that itpro'ects forward from the hub d, on which it turns, and its range of movement being' across the path ofthe needle, itis-consequently sometimes broken by being accidentally left within range ci' and coming in contact with the needle in -it's descent, andis 'liable to jar into such a position when the machine v is in 4cperatiointhe friction on its c'am notI always being suiiicient to holdit inits proper position.

'The fact that itis wholly dependent upon the friction on its cam to hold it' in position, makes it very diicnlt to properly adjust thcjspreadingof the button-hole with such aV lever to the requirements of the various kinds of materials used 'and the narrow1 and broad-gauge machines.

Now, my improvement is designed. tovobviate these diiliculties, and consists in the application of a lever attached to'a like cam turning on said hub d, said lever'projecting backward from said hub, and when'in opera.-

jtion swings in an oppositedirection from that of the lever jnst described, and its range of movement is entirely "fr ec from that of any other part of the machine.

"This lever g is constructed with an irregular-shaped slot through it Aat it to allow the pin shown in iig. 3 to pass through it in any position of thelcver, and to worl; freely through it i-n its hub, z'. The lever g, as shown Iin iig, 1, is in the position it occupies when the clamp isnot spread. It has upon its'un'der sdea serrated projection, as indicated by the dotted lines n, l p In the operation of 4said lever, the teeth 1L are sprung over and upon the stationary pawl m by lifting upon thc end of the lever, which is constructed thin at the points o o'for the purpose of allowing it to spring and` bend suiciently therefor.. Thus the lever maybe secured any desired position, and the jawsof the clamp spread more or less, to suit theI requirements of the'vnrious materials stitched and the narrow and rbrroad gauge machines.

Figure 4 is a. full view of the stationary pnwl m. Figure 5 is a similar v iew of the lever g in an inverted position, showing yits cam and sersated' projection. What I claim as my invention, and desire -to secure by Letters'Patentrisiv The combination, with s clnmp-*snbstantislly ns described, of Ia.'spreader-,1mier projecting backward from the hub d, and constructed and operating ns and for-the purposes described. v

l Also, in combination with said clamp and lever g, the device for securinfa` said lever in am'y'des'red position within the range of its movement, fof the purposes described, consisting of the tee'th'h -and stationary pnwl m; or their equivalent.

Witnesses:

A. C. HAsKINs, EUGENE HUMPHREY.

RUEUS .Hi PEABODY. 

